Have been reading this forum for a while and finally decided to contribute so here goes.
There is a water sports co. in the harbour called blue marlin, they do both speed boat hire and speed boat trips amongst all the usual watersports activities. I know they have a website if you google blue marlin watersports kalkan you should find it.
I know this is the wrong thread but you were also asking about noise from the new road at the rhapsody, i really dont think you should have anything to worry about there.
Hope this helps.